As shown in the figure above, a ball can fit perfectly and move freely in the radial groove of a disk. There is no friction in the groove. We do not consider gravity here (or think the disk surface ...

If
$$
\frac{dQ}{dt} = I
$$
and if an accelerated current produces E.M. waves (radiation), does that mean $d^2Q/dt^2$ (second derivative of a charge w.r.t. time) will give me the magnitude of the wave ...

Till now I have learned that light has fastest speed. But I have also noticed that wherever it travels it only experiences retardation. So I wanted to know if light ever felt acceleration naturally in ...

My maths and physics are rusty... I'm a bit ashamed, but I have this problem:
Let's have a 1000m linear accelerator (mass driver) propel a payload at constant acceleration, with a final velocity of ...

If you have a body on a table,with a velocity $u_0$, going from a non friction area to a friction area, how do I find the function for velocity and acceleration due to the variable friction force(T). ...

I have to calculate the arc length in radians that a circle spinning at speed will travel when it decelerates to $0$.
I have the initial angular velocity in rad/s, the radius in meters, the mass in ...

Let's say a car is driving down a hill. Throughout the descent, you have access to the car's speedometer, a stop watch, and GPS altitude readings. You also know the car's mass if that helps. How would ...

Light moves at $3\times 10^8$ m/s, but is this speed always so?, imagine if I am in a dark room that is $1$ light year long and I am standing at one extreme end of the room, and there is a powerful ...

The condition for 2 (or more) bodies to move such that they are always in contact, is that their accelerations (and velocities) along their common normal should be same.
Can someone explain why this ...

Would a gravitomagnetic analogue of a railgun work as expected, in theory?
Consider replacing the electric currents on each rail with mass currents. Then place a mass between the rails, moving with ...

I am not a physicist, but have always been curious about the twin paradox.
So, here is my question.
There are two twins in space - Twin A and Twin B (both stationary). They are apart from each other ...

I have written some java code for the calculation of some various acceleration and etc. type data. I am now trying to graph that data so I can pull specific data over a time line. The values I have ...

I have a question regarding calculation of a bezier curve.
I'm programming an app where in there's continuous straight line motion of a vehicle at a constant speed. (Let's call it 'u'). When the user ...

Suppose you have a glass of water on the table (the glass is half-filled, say). You accelerate the glass in a straight line across the table. The effect is that the water inside the glass rises up one ...

I don't see them much in any physics lesson or course, but that's probably because I'm not into physics as much. I can understand why velocity and acceleration are useful, but why would someone want ...

I'm aware that this is extremely basic but I've forgotten how to get the coefficient of friction when given a forward force and acceleration.
Can someone describe to me the algorithm for solving the ...

What are the accelerations due to earths spin and orbital motion around the sun?
It must be negligible otherwise humans would have been feeling it, are there any instruments that can measure it? would ...

Suppose you brake with a car (or any other moving object). As the air inside will rush forward, won't there be a relative dearth of air molecules in the back? So, how strong does the acceleration have ...

I have noticed that Euler's formula for force is useful with a couple of natural forces (at distance), like gravity, that can follow a body any length.
If you consider the most common occurrences of ...

Very basic question.
Please show where I'm wrong in the following reasoning.
The movement of an object in function of time could be described as
$$
x(t) = v t + x_{i}
$$
if velocity is constant.
If ...